Why is my armature not showing in animation layout, but it shows in the default layout?
It looks like you are using Rigify and haven't created the actual rig yet. Your Blender also looks strange as there are not Layers on the header for the 3d View. With your mouse cursor over the 3d view press the ` key (above Tab) to hide/show all layers. As this may also be the case.

Go to your user settings (ctrl+alt+u) and select the File tab. Then make sure Auto Run Python Scripts is check marked.